Consolidated Statements of Cash Flows (Parenthetical) $ in Millions	9 Months Ended
	Jun. 30, 2021 USD ($)
Income taxes paid (received), net of refunds	$ 54.6	[1],[2]
Interior Products Divestiture
Income taxes paid (received), net of refunds	46.6
Ongoing Transaction Services Agreement [Member] | Foundation Building Materials Holding Company LLC [Member]
Cash collected	$ 48.1

[1] Nine months ended June 30, 2021 amount includes $46.6 million related to the Interior Products divestiture.

[2] Unless otherwise noted, amounts include both continuing and discontinued operations.